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Unread 29-01-2013, 14:59
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billbo911 billbo911 is offline
I prefer you give a perfect effort.
AKA: That's "Mr. Bill"
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Re: Shooter Track Material - grippy or slick?

Quote:
Originally Posted by Mr V View Post
No if the rail is slick the Frisbee will spin more and it's exit speed is lower. The slick rail allows the Frisbee to spin without moving down the track while the grippy rail causes it to advance at 1/2 the tangential speed of the shooter wheel (assuming no slip between the Frisbee and wheel). This is based not only on my gut feeling but our prototyping.
This is going to require some hard data before I take it as fact.
Video, Chronograph, anything with solid numbers.

I'm only challenging this statement because it is opposite of what our analysis showed.

Quote:
Originally Posted by IndySam View Post
No I'm with Ether, if the frisbee is against a slick surface it will slide along that surface and not get as much spin. If the surface is sticky it is forced to spin because it can't slide.

In all our testing the sticky surface always spins more and gets more distance than a slick surface.
Exactly!

The spin causes the Frisbee to fly more stably and for a greater distance because of that stability. "Muzzle velocity" is not the only factor involved with Frisbee flight. Try hitting it with a tennis racket. You'll see very quickly the impact spin has on the flight of the disk.
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2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
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Last edited by billbo911 : 29-01-2013 at 15:04.